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10. According to the first law of thermodynamics, the energy of the universe is constant. Does...
General Chemistry I Southern California University of Health Sciences Worksheet 3-Thermochemistry According to the First Law of Thermodynamics, total energy of the universe is constant: AE q+w, where w = -PAV; and at constant pressure, q AH 1. A system receives 212 cal of heat and delivers 435 cal of work to the surroundings. What is the change in internal energy of the system in Joules?
Which statement below is inconsistent with the Second Law of Thermodynamics? One cannot completely convert heat energy into an equivalent amount of work. Absolute temperatures can be negative. Eventually, the universe will no longer be able to perform useful work. If an engine does work on the surroundings, then the surroundings can return an equal amount of work to the engine
The first law of thermodynamics is usually written as Q=W+?U. You need to look at the signs carefully; some other disciplines (chemistry, for example) may use other signs, which implies other definitions of these quantities. 1-Which physical law underlies the first law of thermodynamics? -conservation of matter -increase in entropy -conservation of energy -conservation of work 2- The quantity Q is the __________ that is added to the system. -heat - work -entropy -internal energy 3-The quantity W in the...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy (E) of a system. The wo 41 internal energy of an ideal gas is proportional to the temperature and the number of moles of the gas. The internal energy can change when energy is exchanged with the system's environment (ie., objects that are outside the system of interest). The case above is one in which the internal energy of a gas changes due to...
QUESTION 12 According to the first law of thermodynamics, which of the changes, A-D, will always increase the internal energy of a system? (9 = energy transferred, and w = work done) a. q> 0, w < b. None of the changes A-D will always increase the internal energy of a system. OC.q> 0, w > d. q<0,w <0 e. g <0,w>
The first law of thermodynamics is a statement that energy is conserved. If the work out of a system is greater than the heat being put in, what happens to U (internal energy)?
Name Date First Law of Thermodynamics Calculations: Apply the First Law of Thermodynas following problems. 1. 2260 joules of heat is added to a svatem and 1500 2 joules of work is done by the system. What is the change in internal energy of the system? 3500 J of heat is added to a system and 500 is done by the system. What is the change in it energy of the system? 3. 4200 joules of work is done on...
Second Law of Thermodynamics Learning Goal: To understand the implications of the second law of thermodynamics. The second law of thermodynamics explains the direction in which the thermodynamic processes tend to go. That is, it limits the types of final states of the system that naturally evolve from a given initial state. The second law has many practical applications. For example it explains the limits of efficiency for heat engines and refrigerators. To develop a better understanding of this law,...
45. What is the matemathical relationship between potential energy (PE) and kinetic energy (KE)? a. They are directly proportional b. They are inversely proportional c. Their sum is equal to the total internal energy of the system (E) d. Both B and C are correct e. None of the above 46. What is a consequence of the 1 Law of Thermodynamics? a. The energy of a system can never change b. The energy of the surroundings can never change c....
1. A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is a. 61.6 J. b. 30.8 J. c. -61.6 J. d.-30.8 J. e. none of these 2. Which of the following statements correctly describes the signs of q and w for the following exothermic process at P= 1 atm and T = 370 K? H2O(g) → H2O(1) a. q and w are negative. b. is positive, wis...